Vertaile menetelmiä

	Extra Trees	Päätöspuu
Tieteenala	Koneoppiminen	Koneoppiminen
Menetelmäperhe	Machine learning	Machine learning
Syntyvuosi	2006	1984
Kehittäjä	Geurts, P.; Ernst, D.; Wehenkel, L.	Breiman, Friedman, Olshen & Stone
Tyyppi	Ensemble (extremely randomized decision trees)	Recursive partitioning (if-then rules)
Alkuperäislähde	Geurts, P., Ernst, D. & Wehenkel, L. (2006). Extremely randomized trees. Machine Learning, 63(1), 3–42.	Breiman, L., Friedman, J.H., Olshen, R.A. & Stone, C.J. (1984). Classification and Regression Trees. Wadsworth.
Rinnakkaisnimet	Extremely Randomized Trees, ExtraTreesClassifier, ExtraTreesRegressor, ET	Karar Ağacı (Decision Tree), karar ağacı, classification tree, regression tree
Liittyvät	5	5
Tiivistelmä	Extra Trees (Extremely Randomized Trees), introduced by Geurts, Ernst, and Wehenkel in 2006, is an ensemble of decision trees that pushes randomisation further than Random Forest. Both the candidate features and the split thresholds are chosen completely at random at each node, eliminating the greedy search over thresholds. This extra randomness reduces variance, often matches or exceeds Random Forest accuracy, and runs substantially faster at training time.	A Decision Tree is an interpretable classification and regression method, formalised by Breiman, Friedman, Olshen and Stone in their 1984 CART framework, that partitions the data with hierarchical if-then rules. Each split sends observations down one branch or another until a prediction is read off the leaf.